Our research on evolutionary morphology in on diverse vertebrate animals. For this a solid phylogenetic and taxonomic background is fundamental, thus our work in those areas. Our group has concentrated recently on studies of the morphological diversification brought about by domestication in different vertebrate species. Some members of our work are developing projects on evolution in urban environments. The fossil record is a direct and – in the case of vertebrates – fundamental source to understand the patterns and processes of evolution. Our palaeontological work concentrates on the tropics of South America, a region rich in past and present biodiversity. We are currently involved in revisions of our Museum collections of fossils collected by Santiago Roth in Argentina. We continue our projects in the Neogene, and more recently Pleistocene, of Venezuela.